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Fair Values of Assets and Liabilities - Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Recurring [Member], Derivative Loan Commitments and Forward Loan Sale Commitments, Net [Member], USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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Recurring [Member] | Derivative Loan Commitments and Forward Loan Sale Commitments, Net [Member]
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| Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] | ||
| Beginning balance | $ 276 | $ 508 |
| Total realized and unrealized losses included in net income | (188) | (232) |
| Ending balance | 88 | 276 |
| Total realized gain relating to instruments still held at year end | $ 88 | $ 276 |